868611388 has 6 divisors (see below), whose sum is σ = 1520069936. Its totient is φ = 434305692.

The previous prime is 868611347. The next prime is 868611389. The reversal of 868611388 is 883116868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868611389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108576420 + ... + 108576427.

Almost surely, 2^868611388 is an apocalyptic number.

It is an amenable number.

868611388 is a deficient number, since it is larger than the sum of its proper divisors (651458548).

868611388 is a wasteful number, since it uses less digits than its factorization.

868611388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217152851 (or 217152849 counting only the distinct ones).

The product of its digits is 442368, while the sum is 49.

The square root of 868611388 is about 29472.2138293003. The cubic root of 868611388 is about 954.1320981999.

The spelling of 868611388 in words is "eight hundred sixty-eight million, six hundred eleven thousand, three hundred eighty-eight".